New answers tagged headphones
Do the following: Open "About This Mac" Open "More Info..." Open "System Report..." From the left pane choose Hardware > Audio Check if Optical Digital Audio Output is present
Double check to make sure there is no dirt in the headphone port - there is at least one sensor there that might be dirty and making it hard for the system to tell what is or is not plugged into the port. Blow it out with compressed air and/or carefully remove whatever is in it with a toothpick. http://www.instructables.com/id/How-To-Clean-A-HeadPhone-Jack/ ...
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